Temat: Thermal radiation - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Estimation of internal distribution of temperature inside biological tissues by means of multifrequency microwave thermograph
Autorzy:: Stec, B.
Dobrowolski, A.
Powiązania:: https://bibliotekanauki.pl/articles/308150.pdf
Data publikacji:: 2002
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: microwave thermograph
radiometer
thermal radiation
breast carcinoma
Opis:: The paper presents problems connected with thermal radiation of human bodies in microwave range in aspect of diagnosis breast carcinoma. A mathematical model of transmission thermal radiation through tissues is introduced and methods of measurement of temperature, depth and size of heat source, by means of multifrequency microwave thermograph [1 - 7], are described. Theoretical considerations are supplemented with presentation of result experiments.
Źródło:: Journal of Telecommunications and Information Technology; 2002, 1; 39-42
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Sensitivity of microwave radiometers with square - law and linear detectors
Autorzy:: Stec, B.
Dobrowolski, A.
Susek, W.
Powiązania:: https://bibliotekanauki.pl/articles/308204.pdf
Data publikacji:: 2004
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: termografia mikrofalowa
radiometr
promieniowanie termiczne
microwave thermograph
radiometer
thermal radiation
sensitivity
Opis:: Stochastic analysis of modulation microwave radiometers with square - law and linear detectors is presented in the paper. Assuming ideal detector characteristics it is shown that in typical applications, i.e., in very low power measurements, a type of detector used is of no influence on total radiometer sensitivity. Other aspects of use of a particular detector are also presented.
Źródło:: Journal of Telecommunications and Information Technology; 2004, 1; 112-116
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Multifrequency microwave thermograph for biomedical applications
Autorzy:: Stec, B.
Dobrowolski, A.
Susek, W.
Powiązania:: https://bibliotekanauki.pl/articles/308202.pdf
Data publikacji:: 2004
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: termografia mikrofalowa
radiometr
promieniowanie termiczne
microwave thermograph
radiometer
thermal radiation
breast carcinoma
Opis:: This paper presents problems related to thermal radiation of human bodies in microwave range in aspect of diagnosis of breast carcinoma. A mathematical model of thermal radiation transfer through tissues is introduced and methods of measurement of temperature, depth and size of a heat source, by means of multifrequency microwave thermography are described. Theoretical considerations are supplemented by presentation of experimental results.
Źródło:: Journal of Telecommunications and Information Technology; 2004, 1; 117-122
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: High Temperature Effects in Fused Silica Optical Fibers
Autorzy:: Borzycki, Krzysztof
Jaworski, Marek
Kossek, Tomasz
Powiązania:: https://bibliotekanauki.pl/articles/1839330.pdf
Data publikacji:: 2021
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: fire-resistant fiber optic cable
fire test
fused silica optical fibers
incandescence spectrum
thermal deterioration
thermal radiation
Opis:: Fire-resistant fiber optic cables used in safety and monitoring systems playing an essential role in fire fighting and building evacuation procedures are required to temporarily maintain optical continuity when exposed to fire. However, the use of fused silica fiber at temperatures between 800◦C and 1000◦C is associated with two highly undesirable phenomena. Thermal radiation (incandescence) of optical fibers, with its intensity and spectral distribution being proportional to additional attenuation observed in the fiber’s hydroxyl absorption bands (“water peaks”) is one of them. The other consists in penetration of thermal radiation from the surroundings into the fiber, due to defects in glass, causing light scattering and resulting in fiber brittleness. Thermal radiation is a source of interference in fiber attenuation measurements performed during fire tests and affects normal operation of fiber optic data links in the event of a fire. In this article, results of laboratory tests performed on a telecom single mode and multimode fibers subjected to temperatures of up to 1000◦C are presented.
Źródło:: Journal of Telecommunications and Information Technology; 2021, 3; 56-71
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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